AAT3175 Datasheet, PDF (6/12 Pages) Advanced Analogic Technologies – High Efficiency 1X/1.5X/2X Charge Pump For White LED Flash Applications

AAT3175
High Efficiency 1X/1.5X/2X Charge Pump
For White LED Flash Applications
Typical Characteristics
C_IN = C_OUT = C₁ = C₂ = 1µF, T_A = 25°C, V_IN = 3.5V, unless otherwise noted.
Line Response
(1.5X Mode; 150mA Load)
Load Characteristics
(V_IN = 3.5V; 1.5X Mode; 150mA Load)
V_IN
(500mV/div)
V_OUT
(500mV/div)
V_SINK
(500mV/div)
I_LED
(10mA/div)
3.7V
4.2V
3.6V
Time (1ms/div)
V_IN
(100mV/div)
V_OUT
(100mV/div)
V_SINK
(100mV/div)
Time (500ns/div)
V_IN
(100mV/div)
V_OUT
(100mV/div)
V_SINK
(100mV/div)
Load Characteristics
(V_IN = 3.0V; 2X Mode; 150mA Load)
Time (500ns/div)
Input Ripple vs. Input Voltage
(150mA Load)
30
25
20
15
10
5
0
2.5
2.8
3.0
3.3
3.5
3.8
4.0
4.3
4.5
Input Voltage (V)
EN/SET Latch Timeout vs. Input Voltage
350
300
250
-40°C
200
150
100
25°C
85°C
50
0
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
Input Voltage (V)
EN/SET Off Timeout vs. Input Voltage
400
350
300
-40°C
250
200
150
25°C
85°C
100
50
0
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
Input Voltage (V)
6
3175.2006.01.1.2